Class - 10 (Std - X - Science)

Std:
- XSub:-
ScienceMarks:-80 Date:- Time:-Section
A[Physics,
Biology (40)]Q.1] A] Fill in the
blanks. [2]1]
In electric bulb, a …………… filament is used.2]
Electromagnetic induction was first studied by ………….B] Match the following
pairs. [2]Side-ASide-B1]
Abscissic acidA]
Promote cell division2]
GibberellinsB]
Fruit opening3]
CytokinisC]
Growth of stem4]
AuxinsD]
Inhibits growthE]
Promote cell Enlargement.C] Define. [2]1]
Tropism.2]
Fleming’s right hand rule.D] What are the
constituents of Nipermag? [1]Q.2] Answer the
following. [6]1]
Distinguish between ammeter and voltmeter.2]
Give Reason: In domestic electric circuit each appliance has equal potential difference.3]
State the application of concave mirrors.Q.3] Solve any four of
the following. [12]1] What are
neurons? Explain the function of a neuron.2]
Sweety from STD: 11th uses spectacles. The Number of her spectacles
is +0.5 Answer the following questions.a)State the type of lenses used in her spectacles.b)Name the defect of vision.c)Find the focal length of lens.3]
State the characteristics of magnetic lines of force.4]
State ohm’s law and draw the symbols of following components. a) Tap Key (on) b) Ammeter. c) Resistance. d) Rhoestat.5]
Why concave mirrors are used in solar devices?Q.4] A] Solve the
following. [4]1]
The focal length of concave lens is 30cm. find the position of image if an object is placed at a distance of 60 cm
from the lens.2]
Calculate the heat generated in a coil of resistance 41.08 in 5 minutes whe 0.5 ampere current is passed a cross
it.B] Solve any four of the
questions. [6]1]
Draw a neat labeled diagram of Resistance in series.2]
Write a short note on safety measures in using electricity.3]
Draw neat labeled ray diagram for image formation by concave mirror when:- Object is between center of
curvature and focus. 4]
State the difference between cerebrum and cerebellum.5]
Name four devices in which permanent magnets are used.Q.5] Obtain mathematical
expression for the heat generated in metallic conductor by electric current.
(Joule’s law) [5]ORName the following.a)Two plants in which tendrils are present.b)Name the mirror whose focus is situated behind
the mirror.c)Cells that assist neurons in their function.d)Unit of power of lenses.e)Fluid which is filled in between meanings.Section
B[Chemistry (20)]Q.1] A] Fill in the
blanks. [2]1]
Edible oils are compounds of __________ and organic acids.2]
The PH Value of Pure water is _____________.B] Find the odd man out. [2]1]
HCL, HNO3, CH3 COOH, H2SO4.3]
K2O, AL2O3, NA2O, CA2O.Q.2] Answer any two of
the following. [4] 1] Distinguish between physical change and
chemical change. 2] State the Demerits of Mendeleev’s periodic
table. 3] What are indicators? Name any two natural
indicators.Q.3] Draw a neat well
labeled diagram of: [2]1]
Testing the conductivity of the salt solution……….Q.4] Explain the
following chemical reactions with balanced equations- (Any 3) [6]1]
Iron nail is dipped in copper sulphate solution.2]
Bleaching powder is exposed to air.3]
Wet cement is mixed with sand.4]
Aluminium bums in presence of oxygen.Q.5] Explain the features
of Newland’s periodic table. [4]ORExplain the terms:- 1]
Malleability.2]
Calcination3]
Gangue4]
Metalloids.Date:- 18/02/ Science & Technology Marks:-60Std:- X
Section-A (Set-2) Time:- Q.1]
A]
Rewrite the following statement by
selecting the correct option. 3. 1] In dispersion of
sunlight by a glass prism ….. ray is deviated the most. a) red b)
yellow c) orange d) violet.2] At the time of
short circuit, the current in the ciruit…………a) increases b) decreases
c) remains the same d) increases
in steps.3] 1 kilowatt hour =
………..a) 4.6 X 106 Joules b) 3.5 X 106 Joules c) 30.6 X 106 Joulesd) 3.6 X 105
JoulesB]
Identify the odd one : [2]1] Simple microscope,
compound microscope, Telescope, Myopia.2] Name the elements
having one shell and one valence electron.C]
Match the following. [2]Column-AColumn-B1] CaOCL2a] Washing Soda2] Na2CO3
– 10 H2Ob] Oxidising agentc] Baking sodaQ.2]
Answer the following sub-questions. [6]1] State any four
applications of heating effect of electric current.2] An Object is placed
at a distance of 10 cm from a convex lens of focal length 12 cm. Find the
position and nature of the image.3] Define : Laws of
refraction of light.Q.3]
Answer any four sub questions. [12]1] State the
characteristics of magnetic lines of force.2] Give the reason:
Light splits into a spectrum of seven colours when it passes through a prism.3] Write short note on
: Water of crystallization (With proper examples)4] Define atomic size.
How does it varies in a group and in a period?5] What is the
importance of a chemical equation? OR Give the significance of a chemical
equation?Q.4]
Attempt any one of the following. [5]1] With reference to
spherical lenses, State the meaning of the following terms or define the
following terms: 1) Center of curvature (C) 2) Principal Axis 3) Optical centre (O) 4) Principal focus (F) 5) Focal length (f). .2] Find the expression
for the resistors connected in parallel.Section –BQ.5)
A) Fill in the blanks and rewrite the completed statements. (3)1) Yeast reproduces by
………2) The naturally
occurring compounds of metals along with other impurities are known as ……….3) Triple bond can be
obtained by sharing ……….. pairs or ……….electrons.B)
Match the following. (2)Column-AColumn-B1) Carbohydratesa) Protection and
regulation2) Proteinsb) Energy givingc)Body building.C) What is short term
memory? (1)D) Write the parts of
human nervous system. (1)Q.6)
Answer the following questions. (6)1) Distinguish
between: Metals and Non-metals.2) Why is Darwin
called the father of evolution?3) Give scientific
reasons: Paleontological evidence suggests that invertebrates came into
existence before the vertebrates.Q.7)
Attempt any four of the following sub-questions. (12)1) Explain the
formation of an ionic compound between metal and a non-metal by transfer of
electrons with Mg as the metal and CL as a non- meatl to illustrate your
answer.2) Explain the
structure and function of a nephron.3) Draw neat and
labelled diagram: Human excretory system.4) Explain the
following terms. i) Hydrotropic
movement, ii) Phototropism, iii) Seismonastic movement.5) Explain the terms
homozygous and heterozygous using the example of red and white colour of
flowers.Q.8)
Attempt any one of the following questions.
(5)1) Draw the chain and
ring structure of organic compounds having six carbon atoms in them.2) Describe the female
reproductive system in human beings. Date:- 18/02/ Science
& Technology
Marks:-60Std:- X
Section-A (Set –A) Time:- Q.1] A] Fill in the blanks. 3. 1] A ray of light parallel to the
principal axis, after reflection from a concave mirror passes through
---------- 2] In FeSO4, 7H2O, H2O
represents ---------------3] The element eka-boron in Mendeleev’s periodic table is
called ------ in the modern periodic table.B] Match the
following. [2]ReactantsProductsTypes of Reactions1] Fe + SZnSO4 + CyDisplacement2] CuSO4 + ZnFeS + O2CombinationFeSDecompositionC] Identify the
odd one: [2]1] Loud speaker, Microphone, Electric
motor, Bar magnet.2] Voltmeter, Ammeter, Galvanometer,
Thermometer..Q.2] Answer the
following sub-questions. [6]1] Give Scientific reasons : Why does the
sky appear dark instead of blue to a person located in space.2] Differentiate between convex mirror
and concave mirror.3] Explain the term: Endothermic
Reaction.Q.3] Answer any
four sub questions. [12]1] Explain what is meant by the ‘resistivity
of a material and find the expression for it.2] State any three characteristic of the
magnetic lines of force. 3] What are the demerits of Mendeleev’s
Periodic table?4] How do acids and bases react with each
other? What is the name of the process? what products are obtained out of this
reaction?5] Solve and fill in the blanksVelocity in the First medium (V1)Velocity in the second medium (V2)Refractive index 1 n 2refractive index 2 n13
x 108 m/s------------2
x 108 m/s1.2
x 108 m/s2.25
x 108 m/s------------------------------4/3------------------------------------------------------1.5Q.4] A] Attempt
any one of the following. [5]1] Given below is a diagram showing a
defect of human eye study. .i] Name the defect shown in the figure.ii] Give two possible reasons for this of
eye in human being.iii] Name the type of lens used to
correct the eye defect.iii] Draw a neat labeled diagram to show
how the defect is rectified by using the lens.2] Describe the process of electrolytic
reduction of Aluming with the help of diagram.Section –BQ.1) A) Fill in
the blanks and rewrite the completed statements. (3)1) --------- artery takes the blood to
the lungs for Oxidation2) Lymph flows in --------- direction.3) Yeast reproduces by -----------.B) Name the
following. (2)1) Growth of plants in response to
external factors.2) The small gap between the consecutive
neurons.C) Answer in One
sentence. (2)1) Which of the following metals do not
react with hot water or cold water? Sodiam, Potassium, Aluminum, Iron.2) Write the electron dot and cross
structure of methane.Q.2) Answer the
following questions. (6)1) Give scientific reasons. In human
beings the gametes from the male parent decides the sex of the body2) Explain the following reaction with
the help of q balanced chemical equation. Dry aluminum hydroxide is ignited at
1000o C 3) Write a note on Lamarckism.Q.3) Attempt any
four of the following sub-questions.
(12)1) Explain Darwin’s Theory of Evolution. 2) How are fats digested in the human
body.3) Explain reflex action by giving a
suitable example.4) Explain the process of translocation
in plants 5) In the extraction of aluminumi] Name the process of concentration of bauxite.ii] Write the cathode reaction in
electrolytic.iii] Write the function and formula of
cryolite in the extraction of alumina.Q.8) Attempt any
one of the following questions. (4)1) Explain what is a homologous series by
giving suitable examples and write any two important characteristics of the
homologous series.2) Describe sexual reproduction in
flowering plants.